Formation of the oblique spindle in dividing guard mother cells of allium

Mineyuki, Y.; Marc, J.; Palevitz, B.A.

Protoplasma 147(2-3): 200-203

1988


ISSN/ISBN: 0033-183X
DOI: 10.1007/bf01403348
Accession: 007359166

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Abstract
Microtubule organization in dividing guard mother cells of Allium cepa was investigated using tubulin immunofluorescence, in order to determine when the spindle assumes its characteristic oblique orientation. The prophase spindle is transverse, perpendicular to the preprophase band and the future cell plate. Its orientation then shifts, until the majority of spindles are oblique by late metaphase. These observations show that the early spindle conforms to positional information determining the division plane, but becomes oblique during later stages of division, perhaps in response to space constraints.

Formation of the oblique spindle in dividing guard mother cells of allium